from smolagents import CodeAgent,DuckDuckGoSearchTool, HfApiModel,load_tool,tool
import datetime
import requests
import pytz
import yaml
from tools.final_answer import FinalAnswerTool

from Gradio_UI import GradioUI

# PACO - tool creada desde 0
@tool
def codify_text(text: str, step: int) -> str:     
    """A tool to encrypt the original text using the Caesar cipher technique, a type of substitution cipher in which each letter in the plaintext is replaced by a letter some fixed number of positions (step) down the alphabet.
    Args:
        text: Original text
        step: A integer with the number of positions to consider
    """
    resultado = ""
    for caracter in text:
        if caracter.isalpha():
            ascii_offset = ord('A') if caracter.isupper() else ord('a')
            nuevo_caracter = chr((ord(caracter) - ascii_offset + step) % 26 + ascii_offset)
        else:
            nuevo_caracter = caracter
        resultado += nuevo_caracter
    return resultado

@tool
def get_current_time_in_timezone(timezone: str) -> str:
    """A tool that fetches the current local time in a specified timezone.
    Args:
        timezone: A string representing a valid timezone (e.g., 'America/New_York').
    """
    try:
        # Create timezone object
        tz = pytz.timezone(timezone)
        # Get current time in that timezone
        local_time = datetime.datetime.now(tz).strftime("%Y-%m-%d %H:%M:%S")
        return f"The current local time in {timezone} is: {local_time}"
    except Exception as e:
        return f"Error fetching time for timezone '{timezone}': {str(e)}"



final_answer = FinalAnswerTool()
model = HfApiModel(
max_tokens=2096,
temperature=0.5,
#model_id='https://wxknx1kg971u7k1n.us-east-1.aws.endpoints.huggingface.cloud',# it is possible that this model may be overloaded
model_id='https://jc26mwg228mkj8dw.us-east-1.aws.endpoints.huggingface.cloud',
custom_role_conversions=None,
)


# Import tool from Hub
image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_code=True)

# PACO - tool importada de smolagents
duck_search_tool = DuckDuckGoSearchTool()

with open("prompts.yaml", 'r') as stream:
    prompt_templates = yaml.safe_load(stream)
    
agent = CodeAgent(
    model=model,
    tools=[image_generation_tool, duck_search_tool, get_current_time_in_timezone, codify_text, final_answer], ## add your tools here (don't remove final answer)
    max_steps=6,
    verbosity_level=1,
    grammar=None,
    planning_interval=None,
    name=None,
    description=None,
    prompt_templates=prompt_templates
)


GradioUI(agent).launch()